B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    While the CAN bus ignition status is in IGN_RUN and the module is configured for a Seat Track Position Sensor, the module checks the sensor input current ranges.

  • Set Condition:

    If the module detects that the sensor input is less than or equal to 0.3 ma. This DTC may set when the current is between 0.3 mA and 2.0 mA.


Possible Causes
  
DRIVER SEAT HARNESS IMPROPERLY ROUTED
  
DRIVER SEAT HARNESS WIRES CHAFED, PIERCED, PINCHED, PARTIALLY BROKEN
  
DRIVER SEAT HARNESS CONNECTOR TERMINALS BROKEN, BENT, PUSHED OUT, SPREAD, CORRODED, CONTAMINATED
  
(R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT SHORTED TO GROUND
  
(R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT SHORTED TO GROUND
  
(R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT OPEN
  
(R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT OPEN
  
DRIVER SEAT TRACK POSITION SENSOR
  
OCCUPANT RESTRAINT CONTROLLER (ORC)
  



Diagnostic Test

1.CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT RESTRAINT CONTROLLER (ORC)

NOTE: Ensure the battery is fully charged




Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults?

Yes
  • Diagnose and repair the DTCs. Refer to the Table of Contents in this Section for a complete list of symptoms.


No
  • Go To 2

2.VERIFY THAT DTC B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW IS ACTIVE


Does the scan tool display active: B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW?

Yes
  • Go To 3


No
  • Go To 7

3.INSPECT DRIVER SEAT HARNESS WIRES AND CONNECTORS

WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.




Are any of these conditions present?

Yes

  • NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.

  • Replace the Driver Seat Harness in accordance with the Service Information.
  • Perform *ORC VERIFICATION TEST - VER 1.


No
  • Go To 4

4.VERIFY THAT DRIVER SEAT HARNESS IS ROUTED CORRECTLY



Is the Driver Seat Harness routed correctly?

Yes
  • Go To 5


No
  • Reroute the Driver Seat Harness as necessary.
  • Perform *ORC VERIFICATION TEST - VER 1.

5.CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND






Is the resistance below 10k ohms on either circuit?

Yes

  • NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.

  • Replace the Driver Seat Harness in accordance with the service information.
  • Perform the *ORC VERIFICATION TEST-VER 1.


No
  • Go To 6

6.CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN








Is the resistance of either circuit above 5.0 ohms?

Yes

  • NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.

  • Replace the Driver Seat Harness in accordance with the Service Information.
  • Perform the *ORC VERIFICATION TEST-VER 1.


No

  • WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.

    Replace the Occupant Restraint Controller (ORC ) in accordance with the service information.
  • Perform the *ORC VERIFICATION TEST-VER 1.

7.TEST FOR AN INTERMITTENT CONDITION



WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.






WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.



WARNING: To avoid personal injury or death, maintain a safe distance from all airbags while performing the following steps.






Are any ACTIVE DTCs present?

Yes
  • Select the appropriate symptom from Symptom List.


No
  • No problem found at this time. Erase all codes before returning vehicle to customer.